Huckleberry Lake is about 1 mile above the wooden bridge where Huckleberry Creek feeds into Mystic Lake, but is about 6 miles from the Mystic Lake Power Plant . It is on a common route for mountain climbers heading for Granite Peak, the tallest mountain in Montana.
There is a pretty good trail most of the way, then it turns into a boulder scramble (not my favorite thing).
The lake itself is little more than a wide spot in Huckleberry Creek. We had heard there were some big rainbows there, but we didn't have any luck.